Concentrator



(No Model.)

M. MoANENY.

GONOENTRATOR.

110.394.197. Patented Dec. 11, 1888.

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F n xl -Il N Prrzns Ph 04. hcgnph w ml 51 n c WITNESSES w UNITED STATES PATENT OFFICE.

MICHAEL MCANENY, OF DENVER, COLORADO.

CONCENTRATOR.

SPECIFICATION forming part of Letters Patent No. 394,197, dated December 11, 1888.

Application filed January 23, 1888. Serial No. 261,559. (No model.)

To all whom it may concern.-

Be it known that 1, MICHAEL MCANENY, a citizen of the United States of America, residing at Denver, in the county of Arapahoe and State of Colorado, have invented certain new and useful Improvements in Concentrators, of which the following is a specification, reference being had therein to the accompanying drawings. 7

My invention relates to apparatus for the concentration of ores containing precious metals, separating therefrom a large percentage of the gangue and worthless matcriahleaving the remainder as a rich or comparativelyrich concentrate, both for economy in shipment and freight and in reducing or smelting; and its objects are to produce such a concentrator of comparatively simple construct-ion, economical in cost both of manufacture and of operation, strongly and compactly built, and rapid and effective in operation, to which ends it consists in the features and combinations more particularly hereinafter described and claimed.

In the drawings is illustrated a concentrator embodying my invention, in which draw- 1ngs Figure 1 a plan or top view of such a concentrator; Fig. 2, a view thereof, partly in elevation and partly in section, on line a: m, Fig. 1; Fig. 3, a detail view of the end of the pitman-rod; Fig. at, a cross-section of the bumper and shoe on line w as, Fig. 2 Fig. 5, a longitudinal section on line 0000, Fig. 4; Fig. 6, a sectional view ofa part of the motive-power connections; Fig. 7, a section of a detail of construction 011 line y y, Fig. 2.

In the drawings, the reference-numeral1indicates any suitable base or main framing upon which the various parts are assembled and by which they are supported. From this framing rise the standards 2, in whose recessed or slotted tops 4 are seated the boxes or bearings 5, one of which is shown in section in Fig. 7. The box 5 has an inwardly-projecting bearing pivot or pin, 36, upon which takes an eye formed upon the end of an arm, 3. Through boX 5 passes, and is seated therein, the threaded bolt 7, by which box 5 may be moved up or down in the slot or recess 4. Upon the inner side of box 5 is a fixed flange or a fixed nut, 37, taking upon the body of angle-irons 11.

the standard 2 on either side of the slot, while upon its outer end is a tightening-nut, 6, such nut, on being tightened when bolt 7 has placed box 5 in the desired positicm, serving to lock and hold box 5 thereat.

From the bearings 36 of the boxes 5 depend arms 3, pivoted to lugs or cars h on beams or supports 0, which form the support for the concentrating-pan 10, there being one such beam for each side of the pan, which may be strengthened and stiifened by cross-braces or The pan may rest upon the frame composed of beams 2) 9, through the medium of the cross-braces or angleirons, or it may rest directly thereon. ['pon the under side of the pan two parallel planks, 11-, are secured, between which and to which is scoured a bed, 15, supporting the bearing by which the pitman-rod 10 is connected to the pan. At and upon the end of this pitmanrod is secured a loop or cage, 17,within which slides the bearing block or box 19, connected to the end of the body of the pitman 16 by the spring 18. At its other end a loop or cage is secured to the pitman-rod, or a slot is formed therein, in which is seated the bearing 21, passing through a slot, 22, in arm 23, pivoted at its other end, 2i, to the frame of the machine. In the arm 23 is another slot, 25, in which takes a crank-pin carried by the crankarm 26 upon the main shaft 27, to which motion is connnunicated from any suitable prime motor by means of the main band or driving wheels 28. As the throw of the arm 23 is constant, it is evident that by changing the position of bearing 21 in the slot or cage on pitman-rod 16 the throw of the latter may be varied, so as to give, as desired, a greater or a less oscillation to the pan. Beneath the pan, and in such position that the bed 15 may strike thereagainst, is the bumper 29. It is convexed at its rear end, and preferably sits in a shoe correspondingly curved at such end, so that the concavity of the shoe and convexed surface of the bumper form, in eifect, a pivotal connection or hinge, uniting the two thereat, and a hinge might be substituted therefor. At its forward end the bumper is stepped, as at 3i. Beneath the front end of the shoe is formed a depending cage or cham ber, 31, open below, in which is arranged a spring, 32. (Here shown as a rubber block.)

Through, such spring the shoe and the bumper, passes the bolt 33,with adjusting-nuts seated upon its upper end. This permits the bumper and the shoe to separate at the front end a distance determined by the resilience of the spring 32, which may be varied and regulated by the adj listing-nuts referred to.

The pan 10 has an inclined surface, 12, at its head and a discharge spout or flume, 13, at its lower end, there being a cleat across the pan just in advance of flume 13, so as to maintain a body ofwater and material upon the floor of the pan.

In'operation the parts. are adjusted to give the proper inclination to the table and to give the amount of oscillation or swing thereto, and the power is then applied through the wheels 28 and shaft 27. The proper amount of the crushed ore and water is fed upon the pan, the contents being kept in agitation by the swinging. As the pan is swung forward by the pitman rod 16, the bed 15 strikes against bumper 29, and the latter is raised up at its front end, lifting the pan with it. The blow being sudden and sharp, the heavier material is thrown forward toward the incline l2,up which it is thrown and finally discharged by the sequence of such blows and lifting of the pan. 1f the throw of the pan is such relatively to the lift permitted to bumper 29 that the pan cannot pass to the end of its stroke before bumper 29 is at the limit of its lift, the spring 18 will be compressed, shortening the pitman-rod and permitting the motive power to continue in action without danger of breaking or damaging any of the parts.

Having thus described my invention, what- I claim is v 1. The combination, with'a concentrating pan or table and means for imparting an oscillating or swinging movement thereto, of a bumper placed beneath the pan or table pivotally secured to its bed at one end and by a spring permitting movement at the other end, and a lug or projection on the bottom of the pan or table adapted to take against the bumper and be lifted thereby, substantially as set forth.

2. The combination, with a concentrating pan or table and means for imparting a swinging or oscillating movement thereto, of a bumper, a shoe in which the bumper is seated, curved at its rear end, the bumper being correspondingly curved at its rear end, so as to pivotally rest in the shoe, and recessed or stepped at the upper part of its front end, a cage or boX depending from the front of the shoe, a spring seated therein, an adjustable bolt passing through the spring and the stepped portion of the bumper, so that the bumper and shoe are spring-united at their front ends and the bumper is permitted to move from the shoe, and a lug or projection on the bottom of the pan or table adapted to take against the bumper, substantially as set forth.

In testimony whereof I affiX my signature in presence of two witnesses.

MICHAEL MCANENYQ Witnesses:

Z. F. VVILBER, B. L. PoLLocK. 

